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Searching Wikipedia with regular expressions (regex)
Searching with regex online

To search Wikipedia live with regular expressions, use the insource: parameter, followed by your regex search string enclosed in forward slashes, like this: /regular expression/. Here is an example:

insource:/(Abraham|Abe) Lincoln/

insource searches the wikitext version of articles, and so, wikiformatting codes can be included in the search string. If any characters you wish to find are used as special characters within regex, they will need to be "escaped" by preceding each with a backslash. For a cheat sheet on writing regexes, see Wikipedia:AutoWikiBrowser/Regular expression.

For case insensitive searches, include an "i" after the closing forward slash.

Searching with regex offline

To search all of Wikipedia offline using regex, you need to download the Wikipedia database and do the search offline with AutoWikiBrowser's Database Scanner. Activate it from the tools menu in AutoWikiBrowser (AWB). It returns the names of the pages that match your query, which you can have sent directly to AWB's list maker (then you can use AWB to view them all). The Database Scanner has many features, and each query can be easily configured to match, exclude, specify namespaces, ignore redirects, etc. as you see fit.

Other methods of searching Wikipedia with regular expressions
  • To search Wikipedia titles with regex, use Grep.
  • To search within the current page use the edit window:
    • If source editing, use the "Search and replace" dialog by clicking the magnifying glass icon at the far right of the "Advanced" toolbar.
    • If visual editing, type Ctrl-F to get the search box, then click the "(.*)" icon for regular expressions.
    • Regular expressions are also supported by the WikEd text editor gadget.
  • AutoWikiBrowser can do regex search/replaces, on a list of articles that you provide it.
Read more:
The insource: parameter
Regular expression (regex)  
AutoWikiBrowser (AWB)  
WikEd help  
To add this auto-randomizing template to your user page, use {{totd-random}}
Tip of the moment...
Pick from a list of template parameter choices

Do you have a list of possible choices for a template parameter? Use the #switch parser function to define the choices. Then simply enter the choice's numeric value into the template for the applicable parameter, e.g., 1="Sunday" 2="Monday" 3="Tuesday" ... Default choices also can be listed. For simplicity with lists, use a switch statement instead of a "nested if-then-else" conditional statement to control flow.

To add this auto-randomizing template to your user page, use {{totd-random}}

Categories for checking edit

Some categories which might contain pages that can usefully be edited to fix probs:

Policy docs and discussions edit